EP2246982A3 - Circuitry for switching capacitive loads - Google Patents

Circuitry for switching capacitive loads Download PDF

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Publication number
EP2246982A3
EP2246982A3 EP10159844.9A EP10159844A EP2246982A3 EP 2246982 A3 EP2246982 A3 EP 2246982A3 EP 10159844 A EP10159844 A EP 10159844A EP 2246982 A3 EP2246982 A3 EP 2246982A3
Authority
EP
European Patent Office
Prior art keywords
capacitance
electronic switch
circuitry
capacitive loads
transistor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10159844.9A
Other languages
German (de)
French (fr)
Other versions
EP2246982A2 (en
Inventor
Arno Berz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2246982A2 publication Critical patent/EP2246982A2/en
Publication of EP2246982A3 publication Critical patent/EP2246982A3/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/06—Modifications for ensuring a fully conducting state
    • H03K17/063—Modifications for ensuring a fully conducting state in field-effect transistor switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/12—Modifications for increasing the maximum permissible switched current
    • H03K17/122—Modifications for increasing the maximum permissible switched current in field-effect transistor switches

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  • Electronic Switches (AREA)

Abstract

Erfindungsgemäß wird eine Schaltung zum niederohmigen Schalten einer Kapazität (C), mit einem Spannungspotential (P5V) einer Gleichspannungsquelle vorgeschlagen, das über einen elektronischen Schalter (V1) mit der zu schaltenden Kapazität (C) elektrisch verbindbar ist, wobei ein ohmscher Widerstand (R) parallel zur Kapazität (C) liegt. Ein Transistor (V4) ist zur Ansteuerung des elektronischen Schalters (V1) mit dessen Steueranschluss (G) verbunden. Durch Rückkopplung einer zwischen der Kapazität (C) und dem Transistor (V4) liegenden Kondensator (C1) ist das Spannungspotential am Steueranschluss (G) des elektronischen Schalters (V1) derart veränderbar, dass ein intermittierendes Aufladen der Kapazität (C) über den elektronischen Schalter (V1) erfolgt, und dass im Ladeendzustand der Kapazität (C) der elektronische Schalter (V1) dauernd leitend ist.

Figure imgaf001
According to the invention, a circuit for low-impedance switching of a capacitance (C) with a voltage potential (P5V) of a DC voltage source is proposed, which is electrically connectable via an electronic switch (V1) to the capacitance (C) to be switched, wherein an ohmic resistance (R) parallel to the capacitance (C). A transistor (V4) is connected to the control of the electronic switch (V1) with its control terminal (G). By feedback of a between capacitor (C) and the transistor (V4) lying capacitor (C1) the voltage potential at the control terminal (G) of the electronic switch (V1) is variable such that an intermittent charging of the capacitance (C) via the electronic switch (V1), and that in the final charge state of the capacitance (C) of the electronic switch (V1) is permanently conductive.
Figure imgaf001
EP10159844.9A 2009-04-27 2010-04-14 Circuitry for switching capacitive loads Withdrawn EP2246982A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009018996A DE102009018996B3 (en) 2009-04-27 2009-04-27 Capacitor switching circuit for use in e.g. industrial personal computer for storing electrical energy of different voltages, has electronic switch controlled in charging condition of capacitor, and ohmic resistor parallel to capacitor

Publications (2)

Publication Number Publication Date
EP2246982A2 EP2246982A2 (en) 2010-11-03
EP2246982A3 true EP2246982A3 (en) 2016-10-12

Family

ID=42055405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10159844.9A Withdrawn EP2246982A3 (en) 2009-04-27 2010-04-14 Circuitry for switching capacitive loads

Country Status (2)

Country Link
EP (1) EP2246982A3 (en)
DE (1) DE102009018996B3 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69306603T2 (en) * 1992-02-11 1997-06-05 Philips Electronics Nv Current divider and integrated circuit with multiple current dividers
FR2785735A1 (en) * 1998-11-05 2000-05-12 St Microelectronics Sa Non inductive low power electrical supply device, has storage capacitor charged from alternating rectified supply, via switching device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58225718A (en) * 1982-06-24 1983-12-27 Matsushita Electric Ind Co Ltd Vertical sawtooth wave generator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69306603T2 (en) * 1992-02-11 1997-06-05 Philips Electronics Nv Current divider and integrated circuit with multiple current dividers
FR2785735A1 (en) * 1998-11-05 2000-05-12 St Microelectronics Sa Non inductive low power electrical supply device, has storage capacitor charged from alternating rectified supply, via switching device

Also Published As

Publication number Publication date
EP2246982A2 (en) 2010-11-03
DE102009018996B3 (en) 2010-04-29

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